LATTYgraf EFA EFA

excellent resistance to creep
Expanded graphite sheets (EFA) with impregnated expanded graphite
sheets (EFA-I) and with perforated stainless steel reinforcement (EFA G2F).
Range of applications:
Operating parameters (non-associated)
Chemistry and petrochemistry
Energy
General industrial applications
Temperature
Pressure
pH
Main applications:
APPROVAL
BAM for LATTYgraf EFA and LATTYgraf
EFA.I
Pipework flange gaskets
Casing/cover gaskets for valves
Cover gaskets
Manhole gaskets
Compatible with all fluids, even corrosive fluids,
except strong oxidisers.
–200°C à +550°C
(65 MPa) 650 bar
0 – 14
AIR LIQUIDE for LATTYgraf EFA
Format
)
0
C
(°
e 100
r
u
at
er 200
These sheets of 1 m x 1 m et 1.5 m x 1.5 m
With thicknes 1.5 – 2 or 3 mm
Ready cut gaskets to order
p
m
Te 300
400
Advantages
BO
100
150
pr
High pressure
High temperature
High chemical resistancee
Low tightening
Permanent reaction (low relaxation)
re
150
500
su
VO
es
200
Characteristics
g
enin
ght
m ti
100
50
imu
Thickness
mm
Density
EFA
EFA
1.5
2
3
g/cm3
1
1
1
%
≤2
≤2
≤2
ppm
≤ 30
≤ 30
≤ 30
Ash content DIN 51903
Extractable chlorine content
EFA
0
50
VU
0
ISO 1.4404
Thickness of the stainless
mm
Number of reinforcement sheets
0.1
0.1
0.1
1
1
2
Initial load
50 N/mm2
Stress relaxation (DIN 52913)
Residual load (after 16 hours at 300°C) > 48
> 48
> 45
ASME tightening elements
Sealing factor
‘Y’ stress
Young’s modulus
m
MPa
3
60
2.5
30
2.5
30
N/mm2
950
950
950
Compressibility (ASTM F 36)
Elastic recovery (ASTM F 36)
%30 to 35 30 to 40 30 to 40
BU
0
20
40
60
80
100
Operating pressure (bar)
Thickness variation depending on the tightening pressure
Thickness (mm)
Stainless steel type
Opt
Tightening pressure (N/mm2)
Recommended range of use (according to DIN 2690)
2.0
3m
m
1.5
EFA
2m
m
EFA
1.0
1.5 m
%15 to 20 15 to 20 15 to 20
m
0.5
50
In our range of expanded graphite
Tapes
LATTYgraf
LATTYgraf
LATTYgraf
LATTYgraf
Preformed rings
LATTYgraf E/E1
LATTYgraf E2/E2P
LATTYgraf EMB
LATTYgraf EXT/E1XT
LATTYgraf EBS
LATTYgraf EBST
E2
E
E1
EMB
Your source for all sealing solutions
PLANT & OFFICES:
1, rue Xavier-Latty – 28160 Brou – France
Phone: +33 (0)2 37 44 77 77 – Fax: +33 (0)2 37 44 77 99
e-mail: [email protected] – www.latty.com
LATTY, registred trademark LATTY international s.a.
100
150
Tightening pressure (N/mm2)
Sheets
LATTYgraf EFN
LATTYgraf EFI
LATTYgraf EFMCL
Flat Gaskets
LATTYgraf REFLEX
LATTYgraf METAL
The information given in this document is for guidance only and does not commit LATTY International in any way. LATTY
international does not warrant the performance of its products, unless properly fitted and used in accordance with the
instructions, nor can accept any claim for consequential liability.
Cod. 29156 (09-06) KOSSUTH, Editeur-Imprimeur – Paris
EFA
Cross section of the sheet

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